Where do you live?

What kind of seed did you use?

When did you put the seed down?

How big an area are you doing this to?

Is there any shade on the area?

What weed n feed product did you use?

Unless you live in a few very small pockets of the country, you missed the cool season grass seeding period by 10 months. Last August was most likely the time to seed for you. If you live in the south and want to seed bermuda, then you should wait one more month before seeding. If you want a lawn by the 4th of July, you'll have to put down sod.

You made more than one mistake in this project. The one that will haunt you for the next three years was turning the soil before seeding. Now that has to settle. It will settle unevenly causing bumps and holes in the lawn. In 3 years the settling will stop and you can relevel it.

Live in long island NY. put the seed down last week small spots around the yard largest bald spot maybe 2 x 3. Used scotts ez seed. also used scotts feed & weed. Some of the yard has shade

By Memorial day? Forget it. By July? Doable if you use perennial ryegrass but I would wait a few weeks. Not sure how much will survive summer conditions though. I would plan on seeding in the fall regardless.

Scott's makes several weed n feed products. Which one did you use?

Did you wet the grass before applying the weed n feed?

Growing rye in the shade will be a problem. It likes full sun.

If you seeded last week, you still have 1-3 weeks before ANY of that seed germinates - assuming you are watering it for 5 minutes, three times a day. You can't get too disappointed at this point.

Don't be too surprised if you get a significant spread of crabgrass along with the grass or whatever you use. You can fix everything in August and September, so don't get discouraged.

Actually when you mow weeds, it looks better than when you don't mow weeds. My yard is mostly weeds, but the St Augustine is spreading every day. I keep it mowed to make it look acceptable and in a few years, it will all be St Augustine.

The product I use was Scott's turf builder weed and feed , the name had me thinking it would help the new grass grow instead of killing it

I don't see how it could have died overnight. Did you wet the grass before applying the weed n feed?

I was exaggerating it was couple of days and yes I wet the lawn first